The Collaborative International Dictionary
Fob chain
Fob \Fob\ (f[o^]b), n. [Cf. Prov. G. fuppe pocket.]
A little pocket for a watch; -- callled also a watch pocket.
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a short chain or ribbon attached to a pocket watch, usually worn hanging out of the watch pocket, and used to conveniently remove the watch from the watch pocket.
Fob chain, a short watch chain worn with a watch carried in the fob; a fob[2].